EC7 and the application of analytical and empirical models to rock engineering
2014 (English)In: Rock Engineering and Rock Mechanics: Structures in and on Rock Masses - Proceedings of EUROCK 2014, ISRM European Regional Symposium, CRC Press, 2014, 1511-1516 p.Conference paper (Refereed)
The development of EC7 seems to have proceeded with little, if any, input from the rock engineering community, such that the current version of EC7 reveals many difficulties with regard to rock engineering design. Here, following a brief review of various key aspects of the limit state design philosophy adopted by EC7, some of these difficulties in terms of empirical and analytical approaches to rock engineering design are outlined. In particular, EC7 appears to separate the concepts of empiricism, theory, prescriptive measures and observational methods, whereas these are often used in combination in rock engineering design, with empiricism being as a central theme. Similarly, the absence of partial factors for rock mechanics properties is shown to severely limit the applicability of the Design Approaches presented in EC7, and the definitions of Geotechnical Categories given in the code are seen to be unsuitable for some rock engineering designs. Overall, a key difficulty with the code seems to be the lack of recognition of the central and necessary role that empiricism plays in rock engineering design. The challenge for the immediate future is to align EC7 with rock engineering practice, so that it becomes universally applicable to rock engineering design.
Place, publisher, year, edition, pages
CRC Press, 2014. 1511-1516 p.
IdentifiersURN: urn:nbn:se:kth:diva-147826ISI: 000345985300246ScopusID: 2-s2.0-84901310822ISBN: 978-1-138-00149-7OAI: oai:DiVA.org:kth-147826DiVA: diva2:732394
2014 ISRM European Regional Symposium on Rock Engineering and Rock Mechanics: Structures in and on Rock Masses, EUROCK 2014; Vigo; Spain; 26 May 2014 through 28 May 2014
QC 201504142014-07-042014-07-042015-04-14Bibliographically approved